yii2常用查询

yii curd操作

查询

复合查询

  $data = $query->orderBy('apply.created_at desc')
            ->leftJoin('party','party.id=apply.party_id')
            ->select('apply.*,party.site')
            ->offset($pagination->offset)
            ->limit($pagination->limit)
            ->where(['apply.user_id' => $user_id])
            ->asArray()
            ->all();

$user_info = MzCaseGroup::find()->alias('g')
->select(['i.*','g.create_time as times'])
->leftJoin('mz_insurance_user i','`g`.`user_id` = `i`.`user_id`')
->where(['group_id'=>$id])
->asArray()
->one();

插入

批量插入

 $res = Yii::$app->db->createCommand()->batchInsert('exam_paper_answer', ['subject_id', 'answers', 'score', 'paper_id'], $answer_arr)->execute();
               

更新

User::updateAllCounters(['point' => 8],'id=1');
User::updateAllCounters(['point' =>-8],'id=1');

事务

案例1

        $transaction = Yii::$app->db->beginTransaction();
        try {
            //存入数据
            $exam_paper = new ExamPaper();
            $exam_paper->exam_id = +$answer['exam_id'];
            $exam_paper->partner_id = $user->id;
            $exam_paper->start_time = $answer['start_time'];
            $exam_paper->end_time = date("Y-m-d H:i:s");
            $exam_paper->score = $total_score;
            $exam_paper->status = $status;
            if (!$exam_paper->save()) {
                throw new yii\db\Exception(current($exam_paper->getFirstErrors()));
            }
            $paper_id = $exam_paper->id;
            foreach ($answer_arr as $k => $v) {
                array_push($answer_arr[$k] ,$paper_id);
            }
            if($answer_arr){
                //批量存入题目
                $res = Yii::$app->db->createCommand()->batchInsert('exam_paper_answer', ['subject_id', 'answers', 'score', 'paper_id'], $answer_arr)->execute();
                if (!$res) {
                    throw new yii\db\Exception('请重新提交');
                }
            }else{
                throw new yii\db\Exception('尚未做题');
            }
            $transaction->commit();
        } catch (yii\db\Exception $e) {
            $transaction->rollBack();
            return ['code' => 2204, 'msg' => $e->getMessage()];
        }

查

两表连查  

$model = Article::find()->joinWith(['type'])->select('new,t_name,article.t_id')->asArray()->all();
        print_r($model);

use yii\db\Query;

$top10 = (new Query())
    ->from('article')
    ->select(['created_at','title'])
    ->groupBy(['created_at'])
    ->orderBy('id DESC')
    ->limit(10)
    ->all();

//参数绑定，查询操作

$sql='SELECT c.id,c.name,c.phone,c.age,c.sex,c.birthday,a.parent_id,a.camp_id,a.is_uppic,a.is_comment FROM `'.ChildrenApply::getTableSchema()->name.'` AS a left  JOIN `'.Children::getTableSchema()->name.'` AS c ON c.`id`=a.`children_id` WHERE a.`parent_id`=:parent_id AND a.`camp_id`=:camp_id  and a.status=1';
$res=Yii::$app->db->createCommand($sql)->bindValues([':parent_id' => $parent_id,':camp_id' => $camp_id])->queryAll();
插入操作

$res= Yii::$app->db->createCommand()->batchInsert(Children::tableName(), $dbKey, $dbValue)->execute();
//自增和自减

 

//关联分页查询

 

打印sql

echo $query->createCommand()->getRawSql();die;

参考https://www.yiichina.com/tutorial/95